997384633 has 4 divisors (see below), whose sum is σ = 1139868160. Its totient is φ = 854901108.

The previous prime is 997384601. The next prime is 997384639. The reversal of 997384633 is 336483799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 997384633 - 2⁵ = 997384601 is a prime.

It is a super-2 number, since 2×997384633² = 1989552212289089378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997384639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71241753 + ... + 71241766.

It is an arithmetic number, because the mean of its divisors is an integer number (284967040).

Almost surely, 2^997384633 is an apocalyptic number.

It is an amenable number.

997384633 is a deficient number, since it is larger than the sum of its proper divisors (142483527).

997384633 is a wasteful number, since it uses less digits than its factorization.

997384633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142483526.

The product of its digits is 2939328, while the sum is 52.

The square root of 997384633 is about 31581.3969450371. The cubic root of 997384633 is about 999.1274498777.

The spelling of 997384633 in words is "nine hundred ninety-seven million, three hundred eighty-four thousand, six hundred thirty-three".